Errigal Mountain is the highest peak in County Donegal, Ireland, standing at 751 meters (2,464 feet). It is part of the Derryveagh Mountains and is known for its distinctive conical shape and stunning views of the surrounding landscape. The mountain is a popular destination for hikers and outdoor enthusiasts. The mountain's name, "Errigal," comes from the Irish word "Eirigal," meaning "the height." Errigal is often covered in a layer of quartzite, giving it a striking appearance, especially when illuminated by sunlight. The area around Errigal is rich in flora and fauna, making it a beautiful spot for nature lovers.